I wanted to love this, but I kept having problems the eyeliner imprinting pigment on the top of my eye regardless of how long I allowed it to dry. I definitely prefer the convenience of my liquid eyeliner.
Like the other reviews say, they only last about a week -- but they do a good job of keeping the room smelling fresh. The scent isn't overpowering (unlike the sprays, which can smell a little too strong) and it's definitely made a huge difference wherever I use it.
My ecotools foundation brush has survived through so many foundations, washes, cramped travel bags...you get the idea. This thing is durable. Plus, it does a great job when it comes to applying & blending foundation.
I only use this before I do a manicure and it works great for softening up my cuticles. My only gripe is that it doesn't dry too quickly, and I usually end up having to wipe it off with a cotton ball before I apply nail polish. Otherwise, it's great (and it smells great, which is a bonus)!